LASER WELDING IMPACT ON DEFORMATION PROPERTIES OF STEELS WHEN USED FOR CAR-BODY PARTS

Abstract

The energy absorption at crash, usually described by stiffness and crashworthiness, is the key request for the car-body components, considering the material they were made from. The modified 3-point bending test with fixed ends has been developed in our department to assess materials for the car-body parts. The force and punch path are measured and used to calculate stiffness and crashworthiness. Experiments were performed on high strength low alloyed steel H220PD, dual phase steel DP 600 and austenitic stainless steels AISI 304 for base material and specimens welded by solid state fiber laser YLS-5000. Based on the experiments and analysis, the austenitic stainless steel is better to use for car body components of frontal deformation zones. Otherwise, the passenger’s compartment is better protected by applying dual phase steel for car body parts when side impact occurs.

Recommended articles

TEST BENCH FOR TESTING OF THE TRACTION DRIVE OF RAILWAY VEHICLES

LUKAS TRPAK, PETR HELLER, BOHUMIL CEJKA
Keywords: test bench | traction drive | torque transmission | suspension | gearbox oil leakage | fully-suspended drive | computer simulation | optimization

ANALYSIS OF THE WEAR OF SAW BLADE TEETH AND THE PROPOSAL OF METHODS OF INCREASING THEIR WEAR RESISTANCE

DANIELA KALINCOVA, ANDRZEJ PEREC, JAN KOVAC, MIROSLAVA TAVODOVA, JOZEF KRILEK
Keywords: saw blade | cutting edge | wear | tool steel | coating